| Name | Meaning | Gender | Origin |
|---|
| Moo | | Unisex | |
| Moo | | Unisex | |
| Muff | | Unisex | Hebrew |
| Muffin | A small cup shaped cake | Unisex | |
| Muffins | | Unisex | |
| Mumford | | Unisex | Hebrew |
| Munchkin | A very small elflike person. | Unisex | |
| Munchy | | Unisex | Hebrew |
| Myles | inventor of the corn mill | Male | English |
| Nero | stern | Male | Latin |
| Oleo | | Unisex | Hebrew |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Patty | patrician | Female | English |
| Pavarotti | | Unisex | |
| Peggy | pearl | Female | English |
| Petit | | Unisex | |
| Phil | | Unisex | |
| Phineas | oracle; dark-skinned | Male | Hebrew |
| Pie | A baked pastry filled with fruit or meat. | Unisex | |
| Piggy | | Unisex | |
| Pigpen | | Unisex | Hebrew |
| Pillow | A cloth case stuffed with something soft to cushion the head during sleep. | Unisex | |
| Poe | peacock | Male | |
| Poo | | Unisex | Hebrew |